Charak Samhita
ऊर्ध्वश्वासे प्रकुपिते ह्यधःश्वासो निरुध्यते । मुह्यतस्ताम्यतश्चोर्ध्वं श्वासस्तस्यैव हन्त्यसून् ॥५१॥
The upward movement of vayu is aggravated resulting in obstruction of downward movement and unconsciousness, black outs and he succumbs to death quickly.
english translation
UrdhvazvAse prakupite hyadhaHzvAso nirudhyate । muhyatastAmyatazcordhvaM zvAsastasyaiva hantyasUn ॥51॥
hk transliteration by Sanscript